Justin had 4 times as much money as Xavier. After Xavier's father gave Xavier $21, the amount of money Justin had become $3 less than that of Xavier's. How much did Xavier have in the end?
|
Xavier |
Justin |
Before |
1 u |
4 u |
Change |
+ $21 |
|
After |
1 u + $21 |
4 u |
The amount that Justin had remains unchanged.
If Justin had another $3, Xavier and Justin would have the same amount in the end.
4 u + 3 = 1 u + 21
4 u - 1 u = 21 - 3
3 u = 21 - 3
3 u = 18
1 u = 18 ÷ 3 = 6
Amount that Xavier had in the end
= 1 u + 21
= 6 + 21
= $27
Answer(s): $27